Jose Mourinho snapped at a reporter following Manchester United 's abject defeat to Brighton.

United lost 3-2 at the Amex Stadium in the Premier League on Sunday after goals from Glenn Murray, Shane Duffy and Pascal Gross stunned the Old Trafford giants.

And Mourinho , who has raged all summer over United’s transfer policy, let his frustration get the better of him when questioned by beIN SPORTS reporter Carrie Brown, writes the Mirror .

Her first question, about whether United's performance was befitting of a club of their stature, was answered succinctly: "We made mistakes, and we were punished by the mistakes." but her second drew a more irritated answer.

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Romelu Lukaku briefly halved the deficit but a clumsy challenge from Eric Bailly allowed Gross to restore Albion's two-goal lead with a penalty, before Paul Pogba converted an inconsequential stoppage-time spot-kick.

United manager Mourinho blamed individual errors for the surprise defeat and feels it could be damaging for morale.

"The confidence of the players, I think you are right," replied Mourinho, when asked if it would be difficult to raise the spirits of his team.

"It's not just the players, I think every person in every job makes a mistake, he's not happy, self esteem goes down a little bit more, confidence levels, that's human nature.

"If you ask me if my players are, in this moment, happy, I don't think they are."